A. 4/15
B. 4/5
C. −12/15
D. −4/15
Answer:
d. -4/15
Step-by-step explanation:
since the denominators are the same, all u have to do is add -8 and 4
-8+4=-4
then plug in the denominator and it would be -4/15. this is the final answer because it also cannot be simplified further
1)
we first cube a number x i.e.
and then multiply it by 7 and then finally add 8 to the resulting expression.
2)
We first multiply the number x by 7 and then add 8 to it and then cube the resulting expression.
3)
We first multiply x by 7 to get 7x and then cube the number and finally add 8 to it.
4)
We add 8 to a number x to get x+8 and then cube it and finally multiply 7 to the resulting expression.
(7x)3+8 8 added to the cube of 7x
(7x+8)3 The cube of the sum of 7x and 8
7(x+8)3 7 times the cube of the sum of x and 8
7x3+8 8 added to 7 and x cubed